When I putt, I establish my flat left wrist/bent right wrist at "impact hands" address location and have the shaft leaning slightly forward. From there, just 'swing' the right forearm back and through.
With all strokes, low point occurs at the lead shoulder so depending on where you position the ball, the putter head is moving down but negated with loft (Lack Of Frickin Talent)
Continue to look, look, look but in putting you can hear the roll, skid or thumps so listen for greatness!
__________________
Golf can never be considered an enigma. ~HK